diff --git a/1-exercise-solutions/lesson-09/9e.css b/1-exercise-solutions/lesson-09/9e.css
index 50cf445..4f31ece 100644
--- a/1-exercise-solutions/lesson-09/9e.css
+++ b/1-exercise-solutions/lesson-09/9e.css
@@ -22,6 +22,7 @@
   border: none;
   width: 300px;
   vertical-align: middle;
+  display: inline-block;
 }
 
 .tweet-button {